Table 1: The thermal parameters of some RCC dam Two-graded RCC90 Triple-graded RCC90 (20MPa) (20MPa) Adiabatic temperature rise (°C) Tt=19.18xt/(2.51+t) Tt=17.97xt /(2.51+t) Thermal conductivity (kJ/(m·h·°C)) 9.036 8.314 Thermal diffusivity (m2/h) 0.0035 0.00341 Heat exchange coefficient (kJ/(m2·h·°C)) 42 42 Where, t is the age of concrete (d)